Paper winding machine sealing mechanism



June 27,1950 3 Kw T K 2,512,900

PAPER WINDING MACHINE SEALING MECHANISM Filed April 21, 1948 2 Sheets-Sheet l June 27, 1950 G. M. KWITEK PAPER WINDING MACHINE SEALING MECHANISM 2 Sheets-Sheet 2 Filed April 21, 1948 Patented June 27, 1950 PAPER WINDING MACHINE SEALING I MECHANISM George M. Kwitek, Green Bay, Wis., assignor of one-half to Edwin M. Kwitek and one-fourth to Reuben J. Pech, both of Green Bay, Wis.

Application April 21, 1948, Serial No. 22,485 7 12 Claims.

This invention relates to paper winding machine sealing mechanism. The invention is particularly concerned with the sealing of the paper web against an unfilled core while also sealing the other end of the severed core against the filled core or completed paper roll.

It is common practice to feed a web of paper from a parent .or mill roll of paper and to slit and perforate theweb after which the web is wound on to cardboard or other cores for making rolls ofapaper towels, toilet paper, etc.

The construction of machines for accomplishing the above purposes are well known. An ex- ,ample of such machines is set out in my Patent the slit and perforated web. A pivotally mounted knife is employed for severing the web between the filled core and unfilled core.

An object of the present invention is to equip such machine orfmachines withefiective means for sealing both ends of the severed web immediately after their severance so that the upper p'r outer end .of. the web is sealed tothecompleted paper roll while the lower or inner end .of. the severed web is sealed or attached to the new or unfilled coreQA further object is to equip'such awinding machine with novel sealin'g mechanism whereby spaced rings of adhesive upon the unfilled core are brought into alignment with spaced pressure applying means for urging the web into contact with the adhesive rings at such points. Yet" another object is to provide sealing mechanism consisting of flexible and yieldable spring transfer fingers aligned with the adhesive rings and carried by the cutter or knife for engagement with the web at the spaced or aligned points when 'theweb is severed. A still further object is to provide means efiective for applying adhesive to the paper roll which is almostcompletely"formed and in timed relation with the web severing mechanism so that the end of the'web is drawn into overlapping relation with the adhesive on: the almost completely filled roll whereby the free end of the completed roll is securely. held by the adhesive. Yet another object is to provide .paper windingmechanism whicha cam is employed in conjunction with 2 the turret and in cooperation with the sealing means described, the'cam being effective for retaining the outer surface of the filling roll in abutting relation to the outer surface of the. bed roll. Other specific objects and advantages will appear as the specification proceeds. 1

The invention is illustrated in a single. embodiment by the accompanying drawings, in whichi Fig. 1 is a broken side view in elevation of the winding machine equipped with apparatus embodying my invention; Fig. 2, a broken perspective view of the knife structure equipped with the spring transfer fingers embodying my invention; Fig. 3, an'enlarged sectional detail view showing the operation of the knife and sealing fingers; Fig. 4, a detail sectional view withthe winding mandrel and core removed and showing the alignment of the adhesive-applying discs with the spring tran'sferfingers; Fig. 5, a vertical sectional view of a portion of the paper winding machine equipped with mechanism for applying adhesive to the almost completed paper roll so that the severed web. Will be drawn into an overlapping relation with the adhesive; and Fig. 6, a diagrammatic view showing a modified form of structure'in which a secondary bed roll is employed in conjunction with the main bed roll, the slitting and perforating being doneon the secondary bed roll. v

Since the present invention is applied to an existing machine which is well known in the art, a detailed description of the existing machine is believed herein to beunnecessary. For a full description of the existing machine reference is made to my Patent No. 2,237,759and to faciliroll and under and aroundthe bed roll 18. The

feed roll l! is mounted upon a feed roll shaft l9 while the bed roll is mounted upon a bed roll shaft 20.

The bed roll I8 is provided at equidistantly spaced points with longitudinally extending slots 23 for the perforating blades 24. The bed roll is further provided with a plurality of annular equidistantly spaced grooves 25 for the reception of the paper web-slitting. knives '26. The

45a. The mandrels are supported within rotata bly mounted sockets which are rotated when they are adjacent the bed rol-l T8 hy me'ans of mechanism shown in my Patent No. 2,237,759.

Means are also provided for slowly rotating the shaft 48 which carries the turret 46 so as .to bring new cores into a position adjacent the bed roll I8.

The shaft 41 is supported upon a bell crank support pivotally supported upon shaft 52 and having its lower arm engaged by a spring 53. T p in 53 ma y ur e t e upper ar 5! of the bell crank inwardlytoward the bed roll f3.

Mgvem ent of the turret toward the bed roll controlled, by the fixed cam I30 which has an :outer 'arcuate surface 'I3I enga'geable with the "extreme reduced end portion I 32 of the mandrel 45. indicated more clearlyin Fig. 1,.the end portion -of the mandrel 45 follows the arcuate outer surface I3I of the cam and directs the .turret outwardly as the .core is filled so that the outer portion of ithe filling roll on the core abuts andfollowsthe curved surface of the bed roll I8.

The existing windingmachine is also equipped with aknife or cutter 183 which is mounted upon av bell crank ;84 supported upon the shaft 8.5. The upper arm of 'the bell crank is provided with aroller 81 which bears against a timing wheel as mounted upon the shaft 2'1]. A spring 86 urges the lower arm of the bell crank 84, outwardly. The timing wheel '88 .is provided with a cavity 39 into which the roller '81 may drop and thus allow the spring '86 to move swiftly outwardlyto sever ,theweb Z'Iii. 'Thecavity8fi, howevenis filled with a head '30 which is periodically moved laterally :in timingrelation by mechanism shown in detail inmy Patent No. $237,759., to permit the roller 8! t'o'fdrop and the knife to 'be moved outwardly -under the force of spring "86.

The nrachine as described is equipped with a tank I 04 iorrec'eiving adhesive and a roll is provided for transferring adhesive to the core "it is advanced toward the --beii roll I 8.

In "order to incorporate my invention in the "existing machine described, I provide the driven shaft I33 with a plurality of discs 134, as shown more clearly in'Fig. 14'. The discs I34 are spaced apart for applying a ring of glue to the core carriedby the mandrel 45 andjustbefore 'it reaches *the position adjacent the bed roll I8. Prefera- 'bly each core provided with a pair of rings of adhesive.

Aligned with -the 'adhesiveeapplying "discs I34 are the spring transfer fingers I35, as shown more clearly in Figs. 2, '3 and 4. The spring transfer fingers may be of any suitable shape. 'Lprefer, however, to employ fingers of the shape shown more clearlyin Figs, '1 and'3. The spring has its inner end 138 apertured and secured to the knife 33 'bya "bolt 131. The spring then extends downwardly and then upwardly and through a slot I38 "in the knife 83. Extending through the slot I38, the "spring extends downwardly and has a Treeen'd portion I39 turned inwardly, as shown more clearly in Fig. 3. The 'springis supportedby'engagement with the knife 83 and has its iowercurved portion adapted "for 4 I firm wiping engagementwith the severed end of the web It so as to press the web at points directly over the adhesive rings formed by the discs I34.

While I have shown the spring fingers for exerting the pressure directly over the adhesive rings, it willbe underetoodthat other means aligned with theadhesive rings may be employed. If desired, compressed ir or other fiuid may be discharged through the bed roll I8 against the inner sides of the web IS SO as .to press the web forwardly against the adhesive rings. It will be obvious that various means may be employed for this purpose. I prefer spring transfer fingers because of thei-ryieldable quality and their effective wiping action in securing the severed end of the web firmly to the adhesive rings on the new core. Further, by mounting the spring fingers upon the knife, the action of the fingers is extremely rapid and intimed relation with the severing of the web so that in an instant the severed end of the web is firmly attached to the rotating core on mandrel'45. i

Simultaneously with the severing of the web and the attachment of the-lower end of the web to the new core, I providemeans for attaching the upper severed endof the web to the filled or almost filled core above. In the specific illustration given in Fig. 5, i provide a fixed container I48 carried by the frame. Within the container I40 which is partially filled with adhesive, I providea pump cylinder I4I having {a ball-guarding pening I42 communicating with the adhesive in the 1 container. A conduit ,:I43 leads from the lower side of the cylinder I 4| to .a discharge point I44 just above the inner side of the almost completed roll. If desired, a perforated plate 1'45 may be provided in the pump just above the inlet of the conduit I33. A pump piston 146 extends above the container "I4!!! and is provided with a laterally extending slot l4! receiving the hall end I48 of an actuating arm I49, The arm I49 is fixed to a shaft I50 mounted upon a bracket carried by the stationary frame of the. machine. .Also fixed to the shaft I5!) is .a trigger arm "1152 which extends upwardly and is provided with ,an inclined face I53. A spring 154 normally urges the arm I52 toward the bed roll.

Upon the shaft 39 of the machine I .securea bracket I5 5 to which is ,pivotally secured a .cam arm I56. The cam arm I56 is preferably provided at its lower end with .a point 151., as shown more clearly in Fig. 5. Adjustment screws I58 may be provided at each end ofthe bracket I55 to adjust the position of the cam member I55.

With the structure shown .in Fig. 5,, the cam member I56 is rotated slowly by shaft .39 so as to engage the member I52 at the time when .a roll of paper is just being completed on the mandrel moving upwardly from *the bed roll. As, the arm 152 is moved outwardly, it raises the plunger I46 which draws adhesive .into'the chamber of the cylinder I. ;As the member I51 clears the upper edge of the member I552 the member I52 is released :and :spring I514 quickly draws the arm 452 inwardly toward the bed roll thereby forcing the plunger I 46 quickly downwardly. The plate I45 with its .tiny icons'tricticn prevents the escape of adhesive downwardly and the adhesive flows laterally through conduit I43 and is discharged in a measured so that the severed upper end of the web which is drawn upward by the rotating upper mandrel overlaps the spot or spots of adhesive and forms a seal with the adhesive. In other words, the application of adhesive to the roll near the end thereof is overlapped by the free upperend of the severed web and this end is caused to adhere to the body of the completed roll by means or the adhesive. In the final sealing operation, the cam I3] is effective in holding the severed upper end of the web in position by reason of the holding of the completed roll in abutting relation to the surface of the bed roll l8, as shown more clearly in Fig. 1. Thus, the upper roll :and the bed roll are caused by the cam to serve as a guide or confining means for the severed end of the web until it is brought against the spot or spots of adhesive.

In the modification shown in Fig. 6, the main bed roll H0 is constructed like the bed roll l8 except that it is free of the grooves and slots employed with slitting and perforating mechanism. In the modification, a secondary bed roll I'H is provided which is equipped with circumferential grooves cooperating with the slitter I12 for slitting the web. The secondary bed roll I H is also equipped with the slots I13 cooperating with the members I14 on the perforator I15. The web H6 is advanced by the draw roll I" and thence about the secondary roll for the slitting and perforating operations. From the secondary bed roll I'll, the web passes to the main bed roll I10.

While in the foregoing specification, I have shown specific structures for the purposes outlined and useful in connection with paper winding machines, the structures being shown in considerable detail, it will be understood that such details of structure may be varied widely by those skilled in the art without departing from the spirit of my invention.

I claim:

1. In a paper winding machine having a bed roll about which paper passes and core-equipped mandrels supported for movement toward and away from said roll, means for applying adhesive upon a core to be filled, means for severing the web between an unfilled core and an almost filled roll, and means synchronized with said severing means for applying adhesive to said almost filled roll and for pressing the severed end of the web against the adhesive of said unfilled core.

2. In a paper winding machine having a bed roll about which paper passes and core-equipped mandrels supported for movement toward and away from said roll, means for applying adhesive upon a core to be filled, means for severing the web between an unfilled core and an almost filled roll, means synchronized with said severing means for applying adhesive to said almost filled roll and for pressing the severed end of the web'against the adhesive of said unfilled roll, and cam means for maintaining the outer surface of the paper roll on the almost filled core adjacent said bed roll to guide the severed end into overlapping relation with the adhesive thereon.

3. In a paper winding machine having a bed roll about which a paper web passes, coreequipped winding mandrels supported for movement in spaced relation toward and away from said roll, means for applying spaced rings of adhesive upon a core to be filled, a cutter supported within the bed roll for severing the web between a, filled roll 'and an unfilled core, and means aligned with said adhesive rings for pressing the severed web end against said adhesive rings.

4. In a paper winding machine having a bed roll about which the paper web passes and coreequipped winding mandrels supported for movement in spaced relation toward and away from said web, spaced discs rotatably mounted for applying rings of adhesive upon a core to be filled, a knife m'ovably mounted for engagement with said web to sever it, and means carried by said knife and aligned with said adhesive rings for pressing the severed web end against said adhesive rings.

5. In a paper winding machine having a bed roll about which the paper web passes and coreequipped windin mandrels supported for movement in spaced relation toward and away from said web, spaced discs rotatably mounted for applying rings of adhesive upon a core to be filled, a knife movably mounted for engagement with said web to sever it, and means carried by said knife and aligned with said adhesive rings for pressing the severed web end against said adhesive rings, said last mentioned means comprising spring fingers carried by said knife and engageable with said severed web to press against the same at points aligned with said adhesive rings.

6. In a paper winding machine, spaced discs for applying rings of adhesive to a core, spring fingers aligned with said discs, and means for urging said spring fingers forwardly to bring a paper web into engagement with said adhesive rings.

7. In a paper winding machine equipped with means for rotating a core, means for forming spaced adhesive rings upon said core, and pressure means engageable with a paper web and in alignment with said rings for pressing said web against said adhesive rings, said means comprising spring fingers in the form of loops and supported by means of an inwardly turned end portion of each spring finger.

8. In combination with mechanism for applying spaced bands of adhesive upon a core and with means for drawing a paper web to a point adjacent said core, a knife mounted for movement into engagement with said web to sever the same, and spring fingers carried by said knife and supported thereb in alignment with said adhesive bands for pressing the web against said bands.

9. In combination with mechanism for applying spaced bands of adhesive upon a core and with means for drawing a paper web to a point adjacent said core, a knife mounted for movement into engagement with said web to sever the same, and spring fingers carried by said knife and supported thereby in alignment with said adhesive bands for pressing the web against said bands, said knife being provided with slots at points spaced inwardly from the edge thereof and said spring fingers being fixed to said knife and having looped portions extending through said slots and forwardly thereof for engagement with said paper web.

10. In a paper windin machine having a bed roll about which the paper web passes and having a core-equipped winding mandrel for drawing the web thereon to form a paper roll, a pump equipped with a plunger, means driven by said machine during the filling of said core to form the paper roll for reciprocating said plunger to dischargeadhesive uponthe nearly completed roll, and a cutter-operated in timed relation with said pump for severing the web at a point whereby the free end thereof overlaps the adhesive on the filled paper roll.

11. In a paper winding machine having a bed roll about which the paper web passes, a coreequipped winding mandrel for drawing the web thereon to form .a paper roll, and severing means for periodically severing the web, an adhesive pump device having discharge opening adjacent the almost completed paper roll, and actuating means operated by said means in timed relation with said cutter for applying said adhesive at a point on said paper roll which will be overlapped by the severed web; a

12. In a paper winding machine having a bed roll about which the paper Web passes, a coreequipped winding mandrel 'for drawing the web thereon to form a paper roll, and severing means for periodically severing the web, an adhesive pump device having discharge opening adjacent the almost completed paper roll, actuating means operated by said mean-s in timed relationiwith said cutter for applying said adhesive at a point on said paper roll which will be overlapped by REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Date Number Name 1,986,680 Marcalus Jan. 1, 1935 2,272,940

Gerard Feb. 10, 1942 

